Home / 15,724.35-21,697.13-9,008.69

Finding the Fourth Proportional to 15,724.35, 21,697.13 and 9,008.69

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Solution

The fourth proportional to 15,724.35, 21,697.13 and 9,008.69 is: 12,430.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,724.35 : 21,697.13 = 9,008.69 : x
  2. Step 2: Convert to fraction form
    15,724.35/21,697.13 = 9,008.69/x
  3. Step 3: Cross multiply
    15,724.35x = 21,697.13 × 9,008.69
  4. Step 4: Simplify right side
    15,724.35x = 195,462,632.10
  5. Step 5: Solve for x
    x = 195,462,632.10/15,724.35
  6. Step 6: Final answer
    x = 12,430.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.